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| author | David Lechner <dlechner@baylibre.com> | 2023-11-17 21:12:56 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-11-20 14:29:07 +0100 |
| commit | e094de13ae78035c5642d5dfc65b07301765eebc (patch) | |
| tree | eed5b749fa2979188fd77149fa26d1a8488a786e /drivers/spi/spi-axi-spi-engine.c | |
| parent | spi: axi-spi-engine: use devm_spi_alloc_host() (diff) | |
| download | linux-e094de13ae78035c5642d5dfc65b07301765eebc.tar.xz linux-e094de13ae78035c5642d5dfc65b07301765eebc.zip | |
spi: axi-spi-engine: use devm action to reset hw on remove
This moves the reset of the hardware to a devm action in the AXI SPI
Engine driver. This will allow us to use devm on later calls in the
probe function while preserving the order during cleanup.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20231117-axi-spi-engine-series-1-v1-5-cc59db999b87@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-axi-spi-engine.c')
| -rw-r--r-- | drivers/spi/spi-axi-spi-engine.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-engine.c index 77c1c115448d..c18a4b34777e 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -461,6 +461,15 @@ static int spi_engine_transfer_one_message(struct spi_controller *host, return 0; } +static void spi_engine_release_hw(void *p) +{ + struct spi_engine *spi_engine = p; + + writel_relaxed(0xff, spi_engine->base + SPI_ENGINE_REG_INT_PENDING); + writel_relaxed(0x00, spi_engine->base + SPI_ENGINE_REG_INT_ENABLE); + writel_relaxed(0x01, spi_engine->base + SPI_ENGINE_REG_RESET); +} + static int spi_engine_probe(struct platform_device *pdev) { struct spi_engine *spi_engine; @@ -506,6 +515,11 @@ static int spi_engine_probe(struct platform_device *pdev) writel_relaxed(0xff, spi_engine->base + SPI_ENGINE_REG_INT_PENDING); writel_relaxed(0x00, spi_engine->base + SPI_ENGINE_REG_INT_ENABLE); + ret = devm_add_action_or_reset(&pdev->dev, spi_engine_release_hw, + spi_engine); + if (ret) + return ret; + ret = request_irq(irq, spi_engine_irq, 0, pdev->name, host); if (ret) return ret; @@ -532,16 +546,11 @@ err_free_irq: static void spi_engine_remove(struct platform_device *pdev) { struct spi_controller *host = platform_get_drvdata(pdev); - struct spi_engine *spi_engine = spi_controller_get_devdata(host); int irq = platform_get_irq(pdev, 0); spi_unregister_controller(host); free_irq(irq, host); - - writel_relaxed(0xff, spi_engine->base + SPI_ENGINE_REG_INT_PENDING); - writel_relaxed(0x00, spi_engine->base + SPI_ENGINE_REG_INT_ENABLE); - writel_relaxed(0x01, spi_engine->base + SPI_ENGINE_REG_RESET); } static const struct of_device_id spi_engine_match_table[] = { |